This modern building features 616 luxury rental residences, ranging from studios to three-bedroom layouts, designed with high-end finishes like Canadian white oak floors, floor-to-ceiling windows, and state-of-the-art stainless steel appliances, including in-unit washers and dryers. Residents enjoy an exceptional array of over 20,000 square feet of amenities, including a 60-foot indoor pool, a state-of-the-art fitness center with a yoga room and boxing studio, a private dining room with a chef's kitchen, a lounge with an outdoor terrace, a children's playroom, a private dog run with doggy daycare, a golf simulator, and a wine tasting room. A 24-hour doorman and concierge provide top-tier service.

The building is situated in the vibrant Lincoln Square neighborhood, a cultural hub known for its proximity to world-class institutions like Lincoln Center for the Performing Arts, home to the Metropolitan Opera and New York City Ballet. This area seamlessly blends the sophistication of the Upper West Side with modern urban living. Renters at 21 West End Avenue benefit from a "walker's paradise," "rider's paradise," and "very bikeable" score, ensuring easy access to Central Park, the Hudson River waterfront, and numerous subway lines (including the 1, 2, and 3 trains at 66th Street-Lincoln Center). The neighborhood also offers a diverse selection of upscale dining, shopping, and entertainment options, making it a highly desirable and convenient place to live.